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Finding the Fourth Proportional to 53,989.70, 74,505.28 and 29,790.88

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Solution

The fourth proportional to 53,989.70, 74,505.28 and 29,790.88 is: 41,111.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,989.70 : 74,505.28 = 29,790.88 : x
  2. Step 2: Convert to fraction form
    53,989.70/74,505.28 = 29,790.88/x
  3. Step 3: Cross multiply
    53,989.70x = 74,505.28 × 29,790.88
  4. Step 4: Simplify right side
    53,989.70x = 2,219,577,855.85
  5. Step 5: Solve for x
    x = 2,219,577,855.85/53,989.70
  6. Step 6: Final answer
    x = 41,111.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.